OUTWASH FROM THE OLDEST DRIFT. 248 



^a sufficiently strong current throug-h it to carry gravel completely around the 

 loop. There is gravel on the north side and eastern end, but much of the 

 south side appears not to have been filled. Gravel was carried a short 

 distance into the southern limb or branch by a current which passed down 

 the Allegheny but which did not pass around the oxbow. Between this 

 filling and the filling of the eastern end there is an unfilled space about a 

 half mile in length. The filling at the eastern end is mainly sand, the gravel 

 being deposited nearer the river. The upper limit of gravel in this oxbow- 

 like channel seems to be about 250 feet above the river, or somewhat lowei 

 than at points on the Allegheny immediately above and below. This is to 

 be expected if it carried only a weak and indirect current. 



From the south end of this oxbow-like double channel the gravel 

 deposits were carried into a recess on the west side of the valley below 

 Parker, but only a small remnant is there preserved. The next extensive 

 remnant is found on the east side immediately north of Monterey. The 

 gravel there has an estimated thickness of 125 feet, its upper limit being 

 about 280 feet above the river and the underlying rock shelf about 155 feet. 

 Only a small part remains at the original level. 



Between Monterey and Bradys Bend there are terraces standing con- 

 siderably below the level of the terraces at Monterey, which are probably 

 reductions from the original level of filling. The broadest ones are scarcely 

 200 feet above the river. 



Around Bradys Bend the gravel deposits have apparently been carried 

 down the slope with the downward and outward cutting of the stream, 

 so that the lower limits of the original deposition are hard to determine. In 

 the southern part of East Brady, at an altitude of about 120 feet above 

 the river, gravel appears in considerable depth, and may not have been 

 redeposited. At lower levels it is strewn on the slope and probably has 

 been redeposited. South of East Brady, over the ridge which the river 

 encircles, waterworn and angular material is found embedded in a reddish 

 sand up to levels nearly 300 feet above the river, but it is not certain that 

 these highest deposits contain glacial material. On the soutli side of the 

 ridge an island-lik§ gravel remnant is preserved, at an altitude about 270 

 feet above the river, which stands on a rock shelf 40 feet lower, or 230 feet 

 above river level. No Canadian rocks were found in this gravel island, but 

 the general aspect of the gravel is similar to that in the glacial deposits 

 just described, a few miles up the valley. 



